DonFerrari said:
Captain_Yuri said:
You can read more here since it is quite a deep analysis.
http://www.anandtech.com/show/11250/microsofts-project-scorpio-more-hardware-details-revealed
Remember that he didn't have the actual hardware at the time however due to the details from DF and etc, he did make a pretty well educated guess as to what was happening and really, as we are starting to see, his guesses were right so far.
"What makes things especially interesting though is that Microsoft didn’t just switch out DDR3 for GDDR5, but they’re using a wider memory bus as well; expanding it by 50% to 384-bits wide. Not only does this even further expand the console’s memory bandwidth – now to a total of 326GB/sec, or 4.8x the XB1’s DDR3 – but it means we have an odd mismatch between the ROP backends and the memory bus. Briefly, the ROP backends and memory bus are typically balanced 1-to-1 in a GPU, so a single memory controller will feed 1 or two ROP partitions. However in this case, we have a 384-bit bus feeding 32 ROPs, which is not a compatible mapping."
"What this means is that at some level, Microsoft is running an additional memory crossbar in the SoC, which would be very similar to what AMD did back in 2012 with the Radeon HD 7970. Because the console SoC needs to split its memory bandwidth between the CPU and the GPU, things aren’t as cut and dry here as they are with discrete GPUs. But, at a high level, what we saw from the 7970 is that the extra bandwidth + crossbar setup did not offer much of a benefit over a straight-connected, lower bandwidth configuration. Accordingly, AMD has never done it again in their dGPUs. So I think it will be very interesting to see if developers can consistently consume more than 218GB/sec or so of bandwidth using the GPU."
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I see... I hope Pemalite gives an overview on it and tell us what to expect from this. Maybe the gain isn't linear, but I doubt it would be negible unless it's only for marketing and it costed almost zero but that would make no sense.
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Well it is certainly not negible and no one will know for sure until it is out. The point he is trying to make however is that in order to use that bandwidth, it's not as straight forward as it usually is which might lead to developers not bothering with it at all since this is not base level hardware. The more time they spend optimizing for ps4 pro/xbox scorpio, the more time they waste not developing other games and etc. This generation has really been quite an unique generation since devs now have to develop for 5 devices for the most part and 6 if you include the switch.
But again, until we have the hardware in our hands, it's still speculation but it would explain why Xbox One X isn't achieving 4k as widely as it should with third party games.
